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Registered
Join Date: Jul 2002
Location: Huntington Beach, Ca.
Posts: 145
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993 3.9 liter slip ins w/steel cyl walls
I would like opinions please from the real air cooled engine techies on this board.
I spoke with Roy at Motormeister yesterday (please lets not turn this thread into a MM opinion fest) they have a new slip in set of pistons & cylinders for 964/993 that increase displacement to 104mm or 3.9l these are a true slip in no machining. They are alum outers with steel inners, allowing the displacement increase and running thinner but stronger cyl walls. Curiously this is the same technology that was used in last months (May 2005) Excellence in the 9ff 248mph turbo car according to the article steel lined cyls are used in high boost engines and the technology came from F1 using alum pistons in steel cylinders as they are 4 times stronger than alum cyls alone. This seems like a win/win situation, what is the downside? (MM aside) Thanx Marv |
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05-25-2005, 08:43 AM
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Crusty Conservative
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Gee Marv, let's see; MM offering F1 technology...hmmmm...
[long thought process taking place.] Let's ask the Pelican guys, we KNOW how they regard MM's work, right? [more time goes by] I'd go for it, sounds like a safe bet to me. Hey! Maybe they could make you some that are even bigger, so you could be the first 4.0L around...
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Bill 69 911 T Targa, 2.4E w/carbs (1985-2001) 70 911 S Coupe, 2nd owner (1989- 2015) 73 911 T Targa, 3.2 Motronic (2001- ) |
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05-25-2005, 08:58 AM
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MBruns for President
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Re: 993 3.9 liter slip ins w/steel cyl walls
Quote:
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Current Whip: - 2003 996 Twin Turbo - 39K miles - Lapis Blue/Grey Past: 1974 IROC (3.6) , 1987 Cabriolet (3.4) , 1990 C2 Targa, 1989 S2 |
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05-25-2005, 09:03 AM
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Registered
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They aren't making them, so who is the manufacturer?
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Chris https://dergarage.com ‘11 987.2 CS, '01 986S, '11 958S, '24 R1T, '87 Defender V8 |
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05-25-2005, 09:04 AM
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Administrator
Join Date: Feb 2000
Location: Los Angeles
Posts: 13,334
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CMW Racing used to make 4.0 and 4.2 liter kits. I don't think the company is around any more.
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Jack Olsen 1972 911 My new video about my garage. • A video from German TV about my 911 |
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05-25-2005, 09:11 AM
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MBruns for President
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I think Charles with LN (Nickies) is still making the 4.0l jugs
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Current Whip: - 2003 996 Twin Turbo - 39K miles - Lapis Blue/Grey Past: 1974 IROC (3.6) , 1987 Cabriolet (3.4) , 1990 C2 Targa, 1989 S2 |
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05-25-2005, 09:16 AM
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Alter Ego Racing
Join Date: May 2002
Location: Florida
Posts: 5,553
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I think Charles with LN (Nickies) is still making the 4.0l jugs
that sounds so sexy, are they made out of silicone (steel) 
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International GT Champion; Porsche GT3 Cup Trophy Champion; Klub Sport Challenge Champion; Rolex Vintage Endurance Series Champion; PCA Club Racing Champion; National Vintage Racing Champion |
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05-25-2005, 09:27 AM
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MBruns for President
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Juan - you need to get out more...
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Current Whip: - 2003 996 Twin Turbo - 39K miles - Lapis Blue/Grey Past: 1974 IROC (3.6) , 1987 Cabriolet (3.4) , 1990 C2 Targa, 1989 S2 |
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05-25-2005, 09:31 AM
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Join Date: Oct 2002
Posts: 180
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"CMW Racing used to make 4.0 and 4.2 liter kits. I don't think the company is around any more."
Still around. Grown up a bit. They now offer a 4.5l N/A and turbo if you are so inclined and have the $. www.cmwmotorsports.com |
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05-25-2005, 09:35 AM
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Alter Ego Racing
Join Date: May 2002
Location: Florida
Posts: 5,553
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I know ..........
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International GT Champion; Porsche GT3 Cup Trophy Champion; Klub Sport Challenge Champion; Rolex Vintage Endurance Series Champion; PCA Club Racing Champion; National Vintage Racing Champion |
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05-25-2005, 09:37 AM
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MBruns for President
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Here you go Juan...
 I need a sponsorship deal...
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Current Whip: - 2003 996 Twin Turbo - 39K miles - Lapis Blue/Grey Past: 1974 IROC (3.6) , 1987 Cabriolet (3.4) , 1990 C2 Targa, 1989 S2 |
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05-25-2005, 09:46 AM
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Crusty Conservative
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Those are some high performance jugs, alright!
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Bill 69 911 T Targa, 2.4E w/carbs (1985-2001) 70 911 S Coupe, 2nd owner (1989- 2015) 73 911 T Targa, 3.2 Motronic (2001- ) |
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05-25-2005, 09:58 AM
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Registered
Join Date: Oct 2003
Location: Corona, CA
Posts: 1,849
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marv -
the 3,2 want enough... so you got the 3.6. now you want 4.0? ask charles what he has in nickie land 
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-Aaron "60% of the time, it works every time" |
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05-25-2005, 10:00 AM
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Alter Ego Racing
Join Date: May 2002
Location: Florida
Posts: 5,553
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International GT Champion; Porsche GT3 Cup Trophy Champion; Klub Sport Challenge Champion; Rolex Vintage Endurance Series Champion; PCA Club Racing Champion; National Vintage Racing Champion |
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05-25-2005, 10:31 AM
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Hilbilly Deluxe
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I would rather pound my balls flat with a wooden mallet than buy anything from MM.
Tom |
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05-25-2005, 10:46 AM
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MBruns for President
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Quit beating around the bush emcon5...
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Current Whip: - 2003 996 Twin Turbo - 39K miles - Lapis Blue/Grey Past: 1974 IROC (3.6) , 1987 Cabriolet (3.4) , 1990 C2 Targa, 1989 S2 |
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05-25-2005, 10:48 AM
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Registered
Join Date: Sep 2004
Location: Norway
Posts: 3
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Hi I have a set of those 101mm in my SC . Works for me (even whit 11:1 Je pistons on single plug I must be mad!)
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05-25-2005, 11:12 AM
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Registered
Join Date: Jan 2004
Location: Sin City
Posts: 1,652
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Quote:
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2018 911 Carrera coupe 1972 911T targa |
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05-25-2005, 12:44 PM
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Registered
Join Date: Jul 2002
Location: Huntington Beach, Ca.
Posts: 145
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Jeremy964 sez: How about different thermal expansion rates for one...
This is something they address, since the steel liners have a similar expanison rate as the head studs, they do not grow as much as alum cyls. so no more possibility of pulled head studs. Should be better than straight alum? right? |
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05-25-2005, 12:55 PM
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Join Date: Jun 2004
Location: Friendswood, TX
Posts: 500
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From what I have read, Porsche went from the Biral cylinders which were steel cylinder aluminum finned to the nickasil which were all aluminum because to increase the cylinder size to go from 2.4L to 2.7L. The larger engine gave less space between the jugs and required aluminum's better heat transfer to allow for smaller fins
Looks like MM is going retro and is re-selling the biral. Was the 9ff water cooled?
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John F. Lewis 74' 911S Targa + 930/02 76' 914 - Eternal Type IV project FOR SALE |
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05-25-2005, 01:12 PM
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1970 Porsche 911S 2.2l MFI
Gone to California
Turbo
911 3.8 "RS"
993 Cab
1982 Porsche 911SC Coupe 3.2
